Hoisting and conveying device



'D. S. ANDREWS.

HOISTING AND CONVEYING DEVICE.

APPLICATION FILED luLvz. um.

Patented May 23, 1922;

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D. S. ANDREW-S.

1 HOISTING AND CONVEYING DEVICL' APPLICATION FILED' JULY 2 192L.

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'acitizen of the. United States,

u i ii DONALD S. DREWS, OF CLEVELAND,

OI-IIG, ASSIG-NOR TO ANDREWS CRANE CORPO- Specification of Letters Patent.

Patented May 23,1922.

Application filed July 2, 1921. SeriaI No. 482,006.

To all whom it may concern:

Be it known that I, DONALD S. ANDREWS, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented new and useful Improvementsin Hoisting and Uonveying Devices (Uase E,) of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to hoisting and con veying machines of the type shown, described and claimed in my pending application Serial No. 448,437, filed February 28th, 1921, and specifically of a modified form of the device shown and described in application Serial No. 482,005, filed even date herewith.

The said invention consists of means hereinafter described and particularly set forth in the claims.

The object of my invention is to provide a structure of the above described type, which will meet with specific requirements as to economy of construction and adaptability to use under certain conditions, as will be readily understood by those skilled in the art.

The annexed drawings and the following description set forth in detail certain means embodying my invention, the described means, however, constituting but one of the various mechanical forms in which the principle of the invention may be applied.

In said annexed drawings:

Figure 1 represents a side elevation of a device embodying my invention.

Figure 2 represents a fragmentary section taken upon the plane indicated by line II-II, Figure 1.

Figure 3 represents a vertical longitudinal central section taken upon the planes indicated by the lines III-III, Figure 5, certain portions being howeverv shown in side elevation.

Figure 4 represents a fragmentary section taken upon the plane indicated by line IVIV, Figure 3.

Figure 5 represents a plan of the lower portion of the device as viewed from the plane indicated by the line V-V, Figure 3.

The illustrated embodiment of my invention comprises a monorail track 1 upon which travels a carriage or truck 2. Upon this truck is mounted a suitable electrically driven motor 3 which, through the medium of suitable gearing or other connections, is adapted to drive the traction wheels 4 so as to propel the truck along said track, as will be readily understood, this construction being similar to that shown in the above described co-pending application.

Transverse channel bars 5-5 form a part of the truck frame and fixedly secured to these bars is the base of a vertical mast 6, the upper end of which is provided with an anti-friction roller 7 which travels between two side angle bars 8-8 supported from a horizontal channel 9 which is secured to the lower flange of an I-beam 10, the latter being suitably supported from above.

Additional transverse channel-bars 11-1l form a part of the truck frame and upon these bars is fixedly secured a base 12 for a turn-table 13'. This base is formed with a central aperture and is coaxial with the mast (5. Said base is furthermore formed with an annular recess 14 in which the turntable is seated, the bottom of said table having interposed between it and the bottom of the annular recess, suitable ball-bearings 15, additional ball-bearings 16 being provided for receiving side thrust.

Upon the outer periphery of the base is fixedly secured an annular gear 17 which meshes with a pinion 18 mounted upon a vertical shaft 19 running in bearings 20 which are fixedly secured to the turntable. The upper end of this shaft carries a horizontal worm-gear 21 which meshes with a worm 22 mounted upon a horizontal shaft and connected throughthe medium of suitable gearing with an electrically driven motor 23 mounted upon the turntable. By turning the current into the said motor, it will be seen that the pinion 18 will be driven and engaging the fixed annular gear 17 will cause the turn-table to revolve about the axis of the mast.

Mounted upon a horizontal pin 24, Figure 3, which is itself supported in lugs 25, forming a fixed part of the table, is an oscillatory boom 26. This boom may be raised and lowered by means of the two cables 27-27 which are wound upon two drums 28- 28 driven through suitable intermediate gearing by an electrically driven motor 29, also mounted upon the turn-table.

A block and fall 30 is carried by the boom and is wound upon a drum 31 actuated through suitable intermediate gearing by a motor 32 also mounted upon the turn-table.

A suitable cage 33 is provided wherein the operator may be stationed. This cage is placed opposite the boom so as to utilize its weight for the purpose of counter-balancing the structure and its load.

hat I claim is: p

1. In a hoisting and conveying device, the combination of a ground track; a truck adapted totravel upon said track; a turn table mounted upon said truck; a mast mounted upon the latter; an overhead sup- 

